feat: QOL Update import site for ex.Input

[eonarheim]

===:clipboard: PR Checklist :clipboard:===

• 📌 issue exists in github for these changes
• 🔬 existing tests still pass
• 🙈 code conforms to the style guide
• 📐 new tests written and passing / old tests updated with new scenario(s)
• 📄 changelog entry added (or not needed)

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This PR deprecates the old ex.Input.* import site in favor of just importing off of ex.*.

This is a quality of life improvement, it is rather annoying to need to either import Input to use input types, or to type ex.Input.SomeImport to use a type.

The old import site will continue to work for now, you'll just see the deprecation warning in the editor.